Camera bugs? the target is 120p but in reality only able to reach 119,88 fps...

In VP14, there's a feature called Conform to Project Frame Rate, to automatically adjust the playback frame rate to match the project. I think it cannot be perfectly .5 / .25.

Need 120p footage to experiment. If I able to have it, perhaps I can try test it by temporarily adjust the project frame rate, and do conform project frame rate matching, and got the exact number.

If you are going to be able to preview more smoothly in Vegas, it won't be happen with native GoPro source on the timeline. The Cineform intermediate codec was designed expressly for this purpose, and is available in the free GoPro Studio converter.

Once you have rendered the AVI intermediate, begin by following the excellent advice offered above.

Make sure you are using VP13 build 453, which had a major fix for playback of native GoPro footage. Download here: https://www.sonycreativesoftware.com/download/link?id=9256.1

Tips for smooth playback: https://www.vegascreativesoftware.info/us/forum/faq-how-can-i-make-my-video-preview-play-smoothly-in-vegas-pro--104624/

Ref what Musicvid said, the free Cineform VFW (.avi) and Quicktime (.mov) codecs are installed with GoPro Studio which is now part of GoPro Quik Studio.

I see your project is 120 fps. I think it is highly unlikely that any editor and PC combo is going to edit/playback 120p video smoothly without lag.

The question is why is your project 120p. You probably recorded 120p to get smooth slowmo in the situations where it made sense. That smooth slomo only works in lower framerate projects. In a 120p project with 120p media Vegas has to create new frames to do slowmo since you are already using all frames from the media.

You probably want to have your project be 29.97 or 59.94 fps. Vegas will automatically conform your 120p media to the timeline/projedt frame rate for normal speed playback. It will do this by skipping frames in the source (disable resample, otherwise you get frame blenmding which can cause bliurring).

So in a 60p project you can get perfectly smooth slowmo down to .5 (half speed). Slower than half speed Vegas has to create new frames which is not ideal and is not super smooth. In a 30p project you can get perfectly smooth slowmo down to .25 (4x slowmo) from your 120p media. This perfectly smooth slomo is because Vegas is using all the frames from your source media and just playing them back at a slower rate. aka slow motion.

Still not working, 60p project, still lags on .5 speed. 30p project still same lag, nothing changes.
Now i found some old clip wich is 720 @ 120 fps and it plays smoothly slow motion. everything is ok with that 720 p @ 120fps

Assuming you have followed all the advice in this thread then it looks like you need a more powerful PC to do what you are attempting to accomplish with realtime timeline smooth playback.

Assuming you have followed all the advice in this thread then it looks like you need a more powerfuly PC to do what you are attempting to accomplish with realtime timeline smooth playback.

i5-2500K @ 4.5GHz
10GB RAM

120GB SSD
7870 2GB

I think it is not a problem.

I think it is not a problem.

I think its just your problem.
For AVCHD editing you need at least an i7, for years already.
I have the GOPro 5 Black also and my both i7 CPU's has it not easy to manage her files

Assuming you have followed all the advice in this thread then it looks like you need a more powerfuly PC to do what you are attempting to accomplish with realtime timeline smooth playback.

i5-2500K @ 4.5GHz
10GB RAM

120GB SSD
7870 2GB

I think it is not a problem.

On what basis is that enough to handle 1080p120. Wishful thinking on your part?

From your posts 720p120 is handled but the 1080p120 is not. That alone says your machine is not up to the task of what you are trying to do with the source media you are using.

Did you transcode your GoPro AVC files to Cineform as suggested in earlier in this thread? GoPro AVC files have been notoriuously high overhead to decode.

I'll disagree about the previous i7 remark. The 4-core i5 is good especially at your overclock rate. The hyperthreading the i7 offers does not mean much most times. The extra cache of an i7 can be a better advantage than hyperthread.

+1, transcode to cineform in gopro studio.

Hi back again.

Did render videos in GoPro Studio and still video laggs. Searched alot in google but still no help. Im wondering, why there isnt any threads about this in Google? Seems like im alone with this problem? Maybe problem is a SD card?
Also did a test on a pc, wich has i7-2600k and still same problem..

Froyo, can you share small 1080-120p sample for us to experiment?

The i7 2600k is probably worse than your CPU. It has a 3.4Ghz base clock and a single core clock of 3.8Ghz. There is going to be at least a couple of cores going so maybe the CPU is running at 3.6ish.

You seem to be under the assumption that 1080p120 footage should be smooth on the timeline in playback? Why? On what basis? You can always throw more at Vegas than it can handle smoothly.